Takeda Asset Purchase and Stock Purchase Agreements - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	6 Months Ended
	May 23, 2022	Oct. 18, 2021	Oct. 31, 2021	Jun. 30, 2022	Jun. 01, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Preferred stock, shares issued				1,000,000		0
Preferred stock, value, issued				$ 22,342
Research and development related to asset acquisition				$ 50,900
Preferred stock value per share				$ 0.0001		$ 0.0001
Dividends				$ 0
Mandatory Conversion
Business Acquisition [Line Items]
Qualified financing amount for conversion of preferred stock		$ 40,000
Maximum weighted average price per share		$ 40.80
Qualified financing mandatory conversion maximum number of shares		857,843
Series A Convertible Preferred Stock
Business Acquisition [Line Items]
Difference in fair value of the consideration transferred	$ 18,400
Issuance costs				$ 200
Issuance of fair value	$ 22,300			40,900
Series A Convertible Preferred Stock | ASC 480-10-S99-3A
Business Acquisition [Line Items]
Issuance of fair value					$ 40,900
Series A Convertible Preferred Stock | Level 3
Business Acquisition [Line Items]
Preferred stock, value, issued				$ 22,300
Series A Convertible Preferred Stock | Preferred Stock Purchase Agreement
Business Acquisition [Line Items]
Shareholders approved issuance percentage more than issued and outstanding shares					20.00%
Series A Convertible Preferred Stock | Preferred Stock Purchase Agreement | Maximum
Business Acquisition [Line Items]
Convertible Preferred Stock, initially convertible into approximately 857,843 shares of common stock	6,644,014
Series A Convertible Preferred Stock | Mandatory Conversion
Business Acquisition [Line Items]
Maximum weighted average price per share		$ 40.80
Convertible Preferred Stock, initially convertible into approximately 857,843 shares of common stock		857,843
Number of trading days		30 days
Series A Convertible Preferred Stock | Optional Conversion
Business Acquisition [Line Items]
Maximum weighted average price per share		$ 40.80
Qualified financing mandatory conversion maximum number of shares		857,843
Millennium | Takeda Asset Purchase Agreement
Business Acquisition [Line Items]
Upfront Payment Paid			$ 10,000
Clinical development, regulatory and sales milestone payments			470,000
Asset acquisition, total consideration transferred			50,900
Asset acquisition, cash payment			$ 10,000
Millennium | Series A Convertible Preferred Stock | Takeda Asset Purchase Agreement
Business Acquisition [Line Items]
Preferred stock, shares issued			1,000,000
Asset acquisition, consideration transferred, estimated fair value of shares			$ 40,900
Millennium | Series A Convertible Preferred Stock | Takeda Asset Purchase Agreement | Level 3
Business Acquisition [Line Items]
Preferred stock, value, issued			$ 40,900
Millennium | Series A Preferred Stock | Preferred Stock Purchase Agreement
Business Acquisition [Line Items]
Preferred stock, shares issued		1,000,000
Preferred stock value per share		$ 40.80
Convertible Preferred Stock, initially convertible into approximately 857,843 shares of common stock		857,843